Device for preventing sudden acceleration incident of vehicle

Abstract

The present invention relates to a device for preventing a sudden acceleration incident, and to a device for preventing a sudden acceleration incident, electrically connected and provided between a fuel supply line and a starter of a vehicle. The device for preventing a sudden acceleration incident is not operated by means of an electromagnet, which is not operated, less than a set number of revolutions of a vehicle engine, since an electric current is not supplied due to the non-operation of a timer switch, which is provided between the fuel supply line and the starter. The fuel supply of the fuel supply line is cut off such that the device for preventing a sudden acceleration incident is operated by operating a permanent magnet of the polarity opposite to that of the electromagnet by means of the repulsive force of the electromagnet operated by the electric current, which is supplied by the operation of the timer switch, at the set number of revolutions of the vehicle engine, and the electromagnet is not operated since the electric current is not supplied by means of the operation of the timer switch if a certain time passes after the fuel supply of the fuel supply line is cut off. The supply of fuel is simply cut off so as to almost perfectly prevent a sudden acceleration incident, only if the number of revolutions, of the vehicle engine, unexpectedly causing a sudden acceleration is reached.

1 . A device for preventing a sudden unintended acceleration incident, which is installed between and electrically connected to a fuel supply line and a starter of a vehicle and comprises an electromagnet, a permanent magnet, and a timer switch installed between the fuel supply line and the starter, wherein the timer switch: does not operate at a number of revolutions smaller than a pre-configured number of engine revolutions of the vehicle, to block electric current supply to the electromagnet and thus prevent operation of the electromagnet, so as to prevent the device from operating; operates at the pre-configured number of engine revolutions of the vehicle, to allow the electric current supply to the electromagnet and thus enable the electromagnet to generate a repulsive force, which operates the permanent magnet having a polarity opposite to that of the electromagnet and thus operates the device to cut off the fuel supply of the fuel supply line; and, after passage of a predetermined time from the cutting off of the fuel supply of the fuel supply line, operates to block the electric current supply to the electromagnet and thus prevents the electromagnet from operating. 
     
     
         2 . The device of  claim 1 , further comprising an auxiliary timer switch separately and electrically connected between the fuel supply line and the starter of the vehicle, wherein, when the timer switch does not operate to block the electric current supply to the electromagnet and accordingly the device does not operate even at the pre-configured number of engine revolutions of the vehicle, the starter is turned off and the auxiliary timer switch operates to provide the electric current supply to the electromagnet and thus operate the electromagnet, the repulsive force of which starts the permanent magnet to cut off the fuel supply of the fuel supply line, and the auxiliary timer switch operates, after passage of a predetermined time from the cutting off of the fuel supply of the fuel supply line, to block the electric current supply and thus prevent the electromagnet from operating. 
     
     
         3 . The device of  claim 2 , comprising:
 a connection body having a fuel inlet and a fuel outlet formed thereon, which are connected to the fuel supply line;   the electromagnet installed on the outside of the connection body;   the starter electrically connected to the electromagnet;   the timer switch installed and connected in a connection path between the starter and the electromagnet;   a controller which is installed and connected to the timer switch, senses the number of engine revolutions, and operates the timer switch; and   a permanent magnet installed to face the electromagnet in the connection body and having a pole different from that of the electromagnet, wherein the permanent magnet moves forward and backward by repulsive force or magnetic force generated by on/off operations of the electromagnet, so as to open or close the fuel outlet of the fuel supply line.   
     
     
         4 . The device of  claim 3 , further comprising:
 a connection switch installed on a connection path between the timer switch and the controller; and a brake sensor connected to the connection switch, wherein, only when a brake of the vehicle operates, the brake sensor operates to connect the connection switch and thus transfer a signal of the controller to the timer switch.   
     
     
         5 . The device of  claim 3 , further comprising:
 a connection switch separately connected in the connection path between the timer switch and the controller; and a brake sensor and another controller connected to the connection switch, wherein a signal of the controller is transferred to the timer switch at a number of revolutions equal to or higher than the pre-configured number of engine revolutions of the vehicle and, at a number of revolutions, which is smaller than the pre-configured number of engine revolutions but causes a sudden unintended acceleration, the brake sensor operates to connect the connection switch and thus transfer a signal of the another controller to the timer switch only when the brake operates.   
     
     
         6 . The device of  claim 3 , wherein, when the timer switch operates to supply electric current and thus mis-operates the device at a number of revolutions smaller than the pre-configured number of engine revolutions of the vehicle, a connection jack electrically connected in the connection path between the timer switch and the starter is released to block the electric current supply to prevent the electromagnet from operating. 
     
     
         7 . The device of  claim 3 , wherein the controller is an Electronic Control Unit (ECU) of the vehicle. 
     
     
         8 . The device of  claim 3 , wherein the controller is a sensor separately connected to a dashboard of the vehicle.